人教版數(shù)學(xué)一上《8和9的認(rèn)識(shí)》廣東陳日前老師-教學(xué)設(shè)計(jì)-一年級(jí)數(shù)學(xué)教案

121?§ê±

1?ì?§??±ê.

1.è??§éú?úêμ?ê?é?3?Dêyêyá?ê?8?￠9μ???ì?,ì??á8oí9μ??ùêyo?ò??￡

2.á??a8oí9?ú×?è?êy?Dμ???áD?3Dò,?á±è??0~9?÷êy′óD?,?aμà8?￠9μ?Dòêyo?ò??￡

3.?à???§éú3?2?μ?ê??ˉD??￠?￠′|àíD??￠μ??üá|?￡

4.?áo?8oí9μ??§?°,?ò?§éúé?í??·±￡?ìóyoíàí?ˉ?ìóy?￡

2?§?é·???.

?§éú′??°ò??§?°á?7ò??úêyμ?è?ê?,

??è?ê?êyμ???????·????úèYóD3?2?μ??D?a,

óDá?êyêy?￠7ò??úêyμ??3Dò?￠D′·¨oí′óD?±è??μè?üá|,

2￠3?2??áêyêyá??a8?￠9μ?ê????￡

3??μ???μ?.

?ì?§??μ?:8oí9μ??3Dò?°?ùêyDòêyμ?o?ò??￡

?ì?§??μ?:8oí9?ù?￠Dòêyμ?o?ò??°??±e?￡

4?ì?§1y3ì.

4.1μúò??§ê±

4.1.1?ì?§???ˉ.

???ˉ1??μ?è???áa?μ?é?a￡?ì??°òyè?￡o.

1???ó?óêy×?D?μüμ?μ?à′:2?￠5?￠6?￠0?￠3?￠1?￠4?￠7?￡1???2?????t3?ê?2,

1???5??3?ê?5??

′óD?μ?′ó???′???7μ?oó??ê?êy×????òyè?8oí9,

°?êé??ìa?°8oí9μ?è?ê??±?￡

???ˉ2???2êú??D??a?ì?§￡o.

?°D??óó?????°?!?±à?′ó?òò?·ùí???￡?±

3?ê?êé±?μú50ò3?÷ìaí??￡

?°′óí??D???′μ?á?ê2?′?óDê2?′?Dêü?

?±

?¤·￠?§éúèè°?×?è??￠èè°?D￡?°μ??D?é?￡

(ò?)?ì?§8?￠9μ??ùêyo?ò?:

1.?òò??ò:?ì?§?÷ìa??￡òyμ??§éú?′ò??′í?é?óDê2?′,?ü??μ?êyá??÷ê??àéù?￡?÷ìaí??aê|éúìá1?á?êyá??a8?￠9μ???ì?óD:

a.D￡?°á???óD8??ê÷;

b.?¨ì3à?óD8???¨;

c.oú°?é?óD8??×?;

d.oú°???°ú·?×?9?è?¨;

e.óD9??è??ú?¨ì3??àí?ˉ;

f.óD9??o?μ??ú?¨ì3é?·é?è?￡

?§éúêyò?é??°8?￠9?±μ???ì?ê±,?aê?ê?áè?òμ??￠?TDòμ?,?ìê|D??áê±,ó|òyμ?????°′ò??¨μ?·????￠ò??¨μ??3Dòà′êy?￡è?′óé?íù???￠′óíaμ?à??￠′ó′óμ?D?μèμè?￡

2.êyò?êy:

A?￠???t3?ê?μ?×óí?,ó??úêyμ?8?￡

B?￠?§?áó?D?êy,

3?ê?μ?9??μ?×óê±?D?°í￡?±?￡

3.2|ò?2|:

3?ê???êy?÷,

?ú7μ??ù′?é?ì?1?íê?8,

8ìí1?íê?9?￡

4.?òò??ò:

3?ê?3?×óí?,?°8?ú??à?(7μ?oó??)?±?￠?°9?ú??à?(8μ?oó??)?±

ì?o?oó?ùè?í??§???3×?êyò?±é,μ1×?êyò?±é?￡

5.°úò?°ú:

A?￠′ó?§???Dêy3?8?ùD?°?,°ú×??o?2??μ?í?D??￡(??ò????§éú?úoú°?°ú′???)

B?￠oü?ìμ?êy3?9?ùD?°??￡(?úà?ê|±èèü,2?·??§éú?íé??ü?ú8μ??ù′?é?°ú)

6.±èò?±è:oú°?é?·?±eóDêyá??a7?￠8?￠9μ?3??′???,±è′óD??￡

7<8

8<9

7<9

8>7

9>8

9>7

(?t)?ì?§8?￠9μ?Dòêyo?ò?:

1?￠òyè????ùó?°??à?·D?1êê?,??μ÷8???àoíμú8???àμ???±e?￡

2?￠ó??·:??ò?oá??,ìy?úá?:?°3??í??§?eá￠,μú3???eá￠,oó4???eá￠,μú8???eá￠,μú9???eá￠??

3?￠???t3?ê?51ò39??D??ˉ??í?,è??§éú°′òa?óíê3é?￡

(èy)éú???Dμ?8oí9:

1?￠í????????μò??μéú???Dμ?8oí9;

2?￠?ú???t?D?ò?òí????Dμ?8oí9,2￠?μòaò??￡

(??)?ì?§8?￠9μ?D′·¨:

?§?°8?￠9μ?±êDò,??3???D?×′ì??÷ó?êy?§×￠òaê???,2￠íê3é51ò3?°?èò??è,D′ò?D′?±?￡

???ˉ3??á·?°??á·ò?á·￡o.

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3.

óDá?oDí??ù?àμ??é??á|,μúò?oD±?3?μ?á?8??,

μú?toD±?3?μ?á?9??,

??oDê￡??μ??à?

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???ˉ4??×÷òμ????1ééú?